Brian Halligan is an American executive and author. He is the co-founder and executive chairman of software company HubSpot based in Cambridge, Massachusetts, and is also a senior lecturer at Massachusetts Institute of Technology. Halligan coined the term "inbound marketing" to describe the type of marketing he advocates. He has co-authored two books on marketing: Inbound Marketing: Get Found Using Google, Social Media, and Blogs with HubSpot co-founder Dharmesh Shah and Marketing Lessons from the Grateful Dead: What Every Business Can Learn from the Most Iconic Band in History with David Meerman Scott.